Invention Grant
- Patent Title: Offset of contact opening for copper pillars in flip chip packages
- Patent Title (中): 倒装芯片封装中铜柱的接触开口偏移
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Application No.: US13313397Application Date: 2011-12-07
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Publication No.: US08772943B2Publication Date: 2014-07-08
- Inventor: Xueren Zhang , Kim-Yong Goh
- Applicant: Xueren Zhang , Kim-Yong Goh
- Applicant Address: SG Singapore
- Assignee: STMicroelectronics Pte Ltd.
- Current Assignee: STMicroelectronics Pte Ltd.
- Current Assignee Address: SG Singapore
- Agency: Seed IP Law Group PLLC
- Main IPC: H01L29/72
- IPC: H01L29/72

Abstract:
An integrated circuit die has a dielectric layer positioned over all the contact pads on the integrated circuit die. Openings are provided in the dielectric layer over each of the contact pads of the integrated circuit die in order to permit electrical coupling to be made between the integrated circuit and circuit boards outside of the die. For those contact pads located in the central region of the die, the opening in the dielectric layer is in a central region of the contact pad. For those contact pads located in a peripheral region of the die, spaced adjacent the perimeter die, the opening in the dielectric layer is offset from the center of the contact pad and is positioned closer to the central region of the die than the center of the contact pad is to the central region of the die.
Public/Granted literature
- US20130147052A1 OFFSET OF CONTACT OPENING FOR COPPER PILLARS IN FLIP CHIP PACKAGES Public/Granted day:2013-06-13
Information query
IPC分类: